Record controlled perforating apparatus



Feb. l, 1944. C, R DQTY 2,340,800

RECORD GONTROLLED PERFORATING APPARATUS Filed June 15, 1942 14Sheets-Sheet `1 19560,?0 .55AM/Afa a/Y/r ATTORNEY.

ff BY Wm GOOOOO 0 O OO oeoooo 0 O FIGB.

Feb. 1, 1944. c. R. DoTY 2,340,800

RECORD CONTROLLED PERFORATING APPARATUS Feb. 1, 1944. c. R. Do'rY RECORDCONTROLLED PERFORATING APPARATUS 14 shee'ts-sneet s Filed June 13, 1942F l, 1944. c. R. DoTY RECORD CONTROLLED PERFORATING APPARATUS 14Sheets-Sheet 4 Filed June 13, 1942 INVENTOR f@ ATTORNEY Feb. l, 1944. QR` DOTY 2,340,800

RECORD CONTROLLED PERFORATING APPARATUS Filed June l5, 1942 14Sheets-Sheet 5 ATTORNEY.

Feb. l, 1944. C, R DOTY RECORD CONTROLLED PERFORATING APPARATUSATTORNEY.

Feb. 1, 194.4. c;- R DOTY 2,340,800

RECORD CONTROLLED PERFORATING APPARATUS Filed June 13, 1942 14Sheets-Sheet 7 ATTORNEY Feb. 1, 1944. A Q R DOTY 2,340,800

- RECORD CONTROLLED PERFORATING APPARATUS Filed June 13, 1942 A 14Sheets-Sheet 8 Mz'w ' TTORNE Y lBY Feb. 1, 1944. c. R. DoTY 2,340,800

RECORD CONTROLLED PERFORATING APPARATUS A TTORNEY Feb. l, 1944.

c. R. DoTY 2,340,800

RECORD CONTROLLED PERFORATING APPARATUS Filed June 15, 1942 14SheetS--Shee'tI 10 ATTORNEY.

Feb. 1, 1944. C R` DOTY 2,340,800

RECORD CONTROLLED PERFORATING APPARATUS A T TORNE Y.

lFeb. l, 1944. C:- R DOTY 2,340,800

RECORD CONTROLLED PERFORATING APPARATUS A TTORNE Y.

C. R. DOTY RECORD CONTROLLED PERFORMING APPARATUS Feb. l, 1944.

Filed June 13., 1942 14 Sheets-Sheet 15 'INVENTOR 45 ya; n v www 4 5 6 7le Ev v v v v v .r. f f f A f d f f f 6 c 6 c fa e f 5 6 6 rw mw m f/JW. M w M Ro R R R R R R R R GJ n .0, m R m R R R f J I .14.. 0: IJ. 51.@L PST R L. mi .c m M R R R ,a R R 0 6, M 1 n v il n? n? T L 1 X X 0 RRA R R BY 5M M Mfzf/M ATTORNEY.

Feb. 1, 1944. Q R DOTY l 2,340,800

RECORD CONTROLLED PERFORATING APPARATUS z I/EN TOR.

A T TORNE Y.

Paantee reni, 1944 g RECORD CONTROLLED PERFORATING APPARATUS Charlesrlt.Doty, Yonkers, N. Y., assignor to Inv`ternational Business New York, N.Y.,

Machines Corporation, a corporation of New York Application Jllne 13,1942, Serial N0. 446,877

34 Claims.

This invention relates to record controlled perforating apparatus, andmore particularly to such apparatus wherein the data designations arerecorded on a sheet in a code different from the code of the datadesignations sensed on the control record.

A primary object of the present inventionvresides in the provision of`improved apparatus whereby the infomation recorded on statistical ortabulating cards may be perforated in telegraphic tape suitable forcontrolling the operations of remotely situated printing telegraphtransmission and recording devices.

,In the usual printing telegraph or teletypewriter systems, a iive-unitBaudet or Teletype selecting code is employed toJ represent the varioussymbols to be transmitted." This code provides a maximum of thirty-twodifferent combinations so that thirty-two diierent signals may -betransmitted over' the telegraph system by this code. In order to enablethe transmission of more than thirty-two different characters andsymbols, the same code combinations, for example, are employed fordesignating alphabetical and numerical data; thus, it is necessary toemploy a.V key signal for identifying the data designating codecombinations or signals as ,alphabetical or numerical. Also, whenteletypewriters or printers are controlled by telegraphic tapes, it isnecessary that the functiona1" signals (suchA as carriage return) whichcontrol the teletypewriter type basket position are punched in the tapepreceding the characters to be printed. These mentioned signals arepunched in the tape at the beginning of each line, and for any changes.

from letters to numerals, or vice versa, that may occur during theprinting of each line.

Accordingly. the following provisions must be made in the telegraphictape, (l) that the letters and gures key signals or codes must beperforated in thetape preceding the character designating perforationsto indicate whether the coded perforations designate alphabetical ornumerical data. and (2) that carriage return and line feed 'signals orcodes must be perforated in the tape before the character designationsof the next line are recorded on the tape. These latter signals returnthe teletypewriter carriage to the left-hand margin, and space the paperto the next printing line.

In the present commercial statistical or tabulating systems, it iscommon practice to record the information or data on tabulating cards byperfor-ations which are arranged, singly or in different combinations,in different positions in adjacent Vertical columns. The statisticalcode, such as the Hollerith code,M employed in such tabulating systemsis wholly different from the five-unit code used 1n printing telegraphsystems.

Thus, whenever it is desired to prepare a telegraphic tape in accordancewith the data contained on statistical cards, and automatically underthe control of such cards, it is necessary to provide the followingfeatures, (1) 'suitable translating means whereby the sensed data instatistical code on the cards are automatically converted into, andrecorded on the tape, in the telegraphic code, (2) suitable means todetermine whether the columnar data on the cards are al` phabetical ornumerical, and to automatically provide the corresponding key code,letters or gures on the tape preceding the character designatingperforations, (3) additional means to determine the presence of anyblank columns on the cards and to automatically provide for a spacesignal or code on the tape under such conditions, and (4) otheradditional means to automatically provide for the insertion of carriagereturn and line feed signals before recording the next line ofcharacters on the tape.

The specic embodiment to be described serves merely as one illustrativeform of the invention, and comprises a suitable statistical record cardsensing unit, whereby each card is advanced to present successively thecolumns of alphabetical and numerical data designations to individualsensing elements. Groups of translating and control relays areselectively controlled by the sensing elements. The selectivelycontrolled translating relays translatev or convert the Hollerith codeinto the Baudot code, and control selectively the energization of codecombinations of the tape punch magnets so that the alphabetical andnumerical data sensed on the cards are recorded in telegraphic code onthe tape. The selectively controlled control relays conditionselectively a group of supervisory circuits in order y to determinewhether the sensed data in each column of the card contains alphabeticalor numerical data, or is a blank column. In the former event, the tapepunch unit is automatically controlled by the said supervisory circuits,so that 4its magnets are energized to perforate, first, the

key signal or code letters or figures, depending upon which charactergroup (alphabetical or numerical group) the sensed data is related to,and then the code designations corresponding to the sensed data. Thealphabetical or numerical data,y at such times, are stored, in thetranslating relays, until the corresponding key code designations arerecorded in the tape. In the event a. blank `column is detected,provision is made, whereby the said supervisory circuits cause a "spacesignal automatically to be perforated in the telegraphic tape, and alsocause the card sensing unit to be controlled to sense the next column ofthe card. Provisions are also made, whereby the usual R," X, andperforations on the card are sensed, translated and automaticallyrepresented on the telegraphic tape by suitable code designatingperforations.

Accordingly, in addition to the said mentioned features, another objectof the present invention resides in the provision of an improvedrecording apparatus wherein yalphabetical and numerical data, which isrecorded in statistical code and disposed indiscriminately in variouscolumns of a. statistical card, are translated into a telegraphic code,and analyzed to determine and identify the character group to which thesensed data belongs.

Another object of the present invention resides in the provision ofanimproved recording apparatus for determining whether theindiscriminately disposed data in various columns of a statistical cardare alphabetical or numerical, and for recording automaticallyidentifying key code designations on a telegraphic tape, said key codedesignations being recorded prior to the corresponding characterdesignating perforations.

Another object of the present invention resides in the provision of animproved recording apparatus for automatically detecting alphabeticaland numerical data, and blank columns, indiscriminately arranged onrecord cards, and recording identifying designations on the telegraphictape accordingly.

Another object of the present invention resides in the provision of animproved recording apparatus for automatically recording carriage returnand line feed signals successively on a telegraphic tape upon theanalyzation of the last effective column of a statistical card.

Another object of the present invention resides in the provision of animproved recording apparatus for automatically recording carriage returnand line feed signals on a telegraphic tape upon return of areciprocable card carriage for picking up a new card.

Still another object of the present invention resides in the provisionof an improved perforating apparatus having cyclically operable punch Aelements which are set into operation upon the sensing of each newcolumn of a statistical card.

Still another object of the present invention resides in the provisionof an improved perforating apparatus wherein the cyclically operablepunch elements are controlled in a start-stop manner, and operated twocycles whenever a key code is recorded in the telegraphic tape.

Still another object of the present invention resides in the provisionof an improved perforating apparatus wherein the key code is recordedduring the first cycle of operation of the punch elements and thecharacter designating perforations are recorded during the second cycle.

Still another object of the present invention resides in the provisionof an improved perforating apparatus wherein the advancement of the nextcolumn o f a statistical card is suppressed whenever any key code isrecorded in the telegraphic tape.

Other objects of the invention will be pointed out in the followingdescription and claims and illustrated in the accompanying drawings,which disclose, by way of example, the principle of the invention andthe best mode, which has been contemplated, of applying that principle.

In the drawings:

Fig. 1 is a plan view of the sensing unit and shows diagrammatically theelectrically connected record sensing and tape perforating units.

Fig. 1A is a detail of a statistical record card having coded datadesignating` perforations formed therein in statistical code.

Fig. 2 is a section taken along lines 2-2 of Fig. 1.

Fig. 3 is a view of the left end of the card feeding mechanism showingthe card ejecting devices, the view being taken substantially in thedirection of lines 3--3 of Fig. 1.

Fig. 4 is a detail showing the clutch mechanism of the card carriagemechanism and the related driving motor.

Fig. 5 is a detail of the cut-out control device of the card feedingmechanism.

Fig. 6 is a detail of the card carriage escapement mechanism.

Fig. 7 is a detail of the skip magnet and the controlled mechanism.

Fig. 7A is a detail of the cam controlled contacts controlled by thecard carriage return mechanism.

Fig. 8 isa detail showing the telegraphic code employed herein.

Fig. 9 is a fragmentary section of a telegraphic tape perforated by thepresent apparatus.

Ii'g. 10 is a plan view of the tape perforating un Fig. 11 is asectional view of the perforating unit taken along the lines II-II ofFig, 10.

Fig. 12 is a sectional view taken along the lines I2-I2 of Fig. 10.

Fig. 13 is a sectional view taken along lines I3--I3 of Fig. 10 showingthe tape feeding means.

Fig. 14 is a detail of the cam control means for the resetting means ofthe perforating unit.

Fig. 15 is a detail of the cam control means for the locking means ofthe perforating unit.

Fig. 16 is an exploded view of the start-stop clutch means of theperforating unit.

Figs. 17A to 17F arranged sequentially below each other is a diagram ofthe circuit connections of the apparatus.

Fig. 18 is a timing diagram.

General description Before describing in detail the individual recordsensing and tape perforating units which are shown electricallyconnected in Fig. 1, by a cable connection CC, and the operation of thepresent apparatus, a general outline of the functional operationsthereof will be set forth brieiiy.

Individual record cards C (Fig. 1) having columns of alphabetical andnumerical data recorded thereon, in the Hollerith code, are pre sentedto a sensing station, by means of a reciprocable card carriagecomprising a pusher i3 and guide I4. The individual columns of data arefed, step by step, to the group of individual sensing brushes I2 (asensing brush I2 being provided for each index point position). 'Ihesaid sensing brushes I2 are connected to individual translating relaysof the group RR, RX, R0, RI-RQ (see Fig. 17A), which relays arecontrolled selectively in accordance with the sensed data designationson the record cards. A plurality of control relays RIU-RM are connectedto certain ones of the translating relays so as to be controlledselectively by the brushes in accordance with the data sensed on thecards.

2,340,800 The individual translating relays are provided with groups oftranslating contacts (see Figs. l7C-17F) connected in cascadedrelationship, which contacts, in turn, are connected to the commonconductors'SH-BIE. The said translating relays and associated contactsare effective to translate or convert the data designations sensed instatistical code to the five-unit telegraphic code, and, accordingly,control selectively the energization of the punch magnets 290 indifferent code combinations, thereby causing the code designatingperforations representing the data sensed on the record cards to bepunched in the telegraphic tape 200 (Fig. 9).

In order to distinguish properly, whether the code designations in thetelegraphic tape are alphabetical or numerical data, a. plurality ofsupervisory circuits are provided, which circuits are selectivelycontrolled by the said control relays. The said supervisory circuitsinclude the relays RIE-RIS (Fig..17B), which relays are conditionedselectively in order to supervise the tape punch operations. Whenever,alphabetical data are sensed on the record cards, relays R15-RIS andtheir associated circuits are conditioned to cause the punch to record aletters key signal or code preceding the data designations representingthe alphabetical data and Whenever, numerical data are sensed the saidrelays and circuits are conditioned to cause the punch to record a"figures key signal or code preceding the' numerical data designations.It is to Vbe understood, whenever two or more columns of data sensed onthe cards relate to the same group of characters, namely, thealphabetical or numerical character group, it is not necessary toprovide an individual key signal or code before each character codedesignation to be recorded in the telegraphic tape 200. A single keysignal or code preceding a group of successive code designationsrepresenting characters of the same group is sumcient.

'I'he tape punch unitv is operated in a. startstop manner, under controlof a clutch magnet 280, and normally is operated one cycle for recordingthe character code designating perforations. However, whenever a changefrom alphabetioal to numerical characters, or vice versa, is sensed inthe record cards, the sensed data. is stored in the said translatingrelays during a preliminary punch cycle. Under these condi- Theindividual card sensing and tape punch units will now be described insumcient detail for a full comprehension of the present invention. Inview of the fact, that the mechanical arrangement of the card feedingand electing mechanism is substantially the same as that found inthemachines known as the internation duplicating key punch, andalphabetical verifier, such as shown, for example, in U. S. Patent No.1,914,263 granted June 13, 1933 to Lake et al., U. S. Patent No.2,107,161 granted February 1, 1938-, to Page, and the copendingapplication Serial No. 296,961, flled September 28, 1939, the followingcondensed description thereof is deemed sufficient. The tape punch to bedescribed is set forth and claimed in a copending application, SerialNo. 438,973 filed April 15, 1942, by A. C. Holt.

Control record Referring now to Fig. 1A, the control record i is shownto comprise a well known tabulating machine record card, generallydesignated C, of the type quite commonly used in the Hollerith electrictabulating systems. Diiferentially positioned control representations,such as perforations 9, are used to represent the various data andcharacter designations. The perforations are differentially positionedin various columnar areas or elds of the record card, and by thedifferential positioning thereof different data values are impartedthereto. It is seen that the letters of the alphabet are designated bypairs of control representations or perforations, each perforation of apair being located in one of the twelve index point positions of acolumnar area. Commonly, the,index point positions indicated as R and Xare referred to in the tabulating systems as the twelve and eleven index,point positions respectively.

`The Hollerith character code shown in Fig. 1A is quite an arbitrary oneand different well known codes which have been used in statisticalsystems may beemployed in the present recording systions, the saidconditioned relays RIE-11M!!y and associated circuits cause the punchunit to operateftwo cycles, so that during the first cycle the said keysignal or code is recorded, and during the second cycle the saidcharacter code `designations are recorded.

Whenever a blank column is detected in the record card, the said controlrelays RIU-RM condition additional circuits, whereby the punch unit iscontrolled to record automatically a space signal or code in thetelegraphic tape 200, and the recordv card sensing unit is controlled,whereby the next column of the card is fed to the sensing brushes I2 inorder to be analyzed.

During the time, the reciprocable card carriage is returned to pick up anew card and present its first columnl to the sensing brushes, the camcontrolled contacts CRCI-CRC5 (Figs. 7A, 17A and 17B) are set intooperation, under control of card carriage returning mechanism includinggear 26, to condition additional circuits, whereby the punch unit iscontrolled to record automatically a carriage return signal in the tapefollowed by s. line feed signal.

have as many columnar tem. It will be noted by reference to the saidcode in Fig. 1A that the alphabet is divided into three groups. Theletters of the first group A to I are designated by differentcombinations of a perforation in the R index point position withperforations in the one to nine index point positions. The letters ofthe second group J to R are designated by perforations in the X positionand combination of perforations in the one to nine positions, While thelettersof the third group S to Z are identified by combina-tions of a 0perforation with perforations in the two to nine index point positions.'I'he individual numerical characters are represented by a singleperforation in the corresponding zero to nine index point positions. Therecord cards may areas for the reception of the data designatingperforations as may be desired. The description to beset forthhereinbelow relates to mechanism commonly used in tabulating systemsemploying the standard eighty column record card.

Record sensing um't Record card feeding peana-Referring to Fig. 1, therecord cards C to be sensed or analyzed are placed in a magazinedesignated l0 from which they are advanced singly by means of a pickerIl toward the left to present their first column to a card sensing'position above the sensing brushes designated l2 (also see Fig. 2).

In this position, the reclprocable card carriage comprising a pusher I3and a forward guide I4 engages the card and advances it, step by step,under control of the escapementmechanism to be described later. PusherI3 and guide I4 are carried by an escapement rack I and the picker knifeII is carried by a rack bar I8. Rack I5 has a gear I1 meshing with itslower edge (see Fig. 2) and bar I6 has a gear I8 (see Fig. 4) meshingwith its upper edge, both gears being mounted on a cross shaft I6 (seeFig. l). Due to this connection between the elements, the movement ofpicker II toward the left, as viewed in Fig. 1, is accompanied bymovement to the right of pusher I3 and forward guide I4. At thecommencement of operations, the picker and pusher are in the positionshown in Fig. 1.

The rack I6 is provided with a finger piece 20 at its right handextremity by means o'f which the rack I6 and the picker II may be movedtoward the left to feed a card from the magazine I0. This movement isaccompanied by movement of the pusher I3 in the opposite direction, theparts being so proportioned that, when the card has been advanced topresent its rst column to the sensing brushes I2, the pusher I3 willhave moved toward the right sumciently to engage the right hand ortrailing edge of the card, and will now control the further advancementthereof in response to the operation of the escapement mechanism. Aone-way clutch mechanism, generally designated 2| in Fig. 4, permits theimmediate return to the right of bar I6 and picker II under control of aspring (not shown).

The operation of card feeding just outlined is more fully explained inPatent 1,772,186 granted to F. L. Lee et al, for a duplicating punchingmachine. The escapement mechanism referred to is of the same generalnature as that disclosed in the Schaan Patent 1,426,223 and a briefdescription thereof will be given later.

Secured to the under side of the base of the machine is a motor 22 (Fig.4) coupled to a stub shaft 23 (see Fig. 2), to which is secured a worm24 in mesh with a worm wheel 24a secured to a shaft 24h, one end ofwhich has secured thereto a ratchet-shaped clutch element 25. Looselymounted on shaft 24h is a gear 26 meshing with teeth on the lower edgeof rack bar I6 and on which gear is mounted a disk 21 (Fig. 4). Mountedupon disk 21 is a clutch mechanism generally designated 28, one elementof which is provided with a pin 29 positioned for engagement by a finger30 integral with the armature 3| of a trip magnet 32. With the machineat rest, the parts occupy the position shown in Fig. 4 and, when magnet32 is energized, the finger 30 will operate the clutching mechanism tocouple the disk 21 to the rotating ratchet 25, so that the disk 21 andgear 26 are rotated counterclockwise to drive the rack bar I6 toward theleft. The clutching mechanism is constructed, as explained in greaterdetail in the patents referred to, so as to remain in engagement forsubstantially a complete revolution, at the completion of which time theclutching mechanism engages a iixed member 33, which effects uncouplingof the parts, whereby they may automatically return to the positionshown in Fig. 4 under the influence of a spring (not shown). This powerdrive of rack bar I6 toward the left has the same eiect as the manualmovement thereof previously explained, that is, a card will be advancedto sensing position and the pusher I3 will engage the same for furtherstep-by-step advancement, and rack bar I6 may thereafter return to itshome position without disturbing the advanced position of the card orpusher I3, this being permitted by the one-way clutch structure 2lmentioned above.

Also integral with the armature 3l of the trip magnet 32 is an arm 34(see Fig. 2), the free end of which is adapted to bear upon the centerblade of pairs of contacts 35 and 36 to open the former and close thelatter when magnet 32 is energized, and they will be maintained in suchshifted position by a latching bell crank 31, the lateral extension 38of which is adapted to be engaged by a plate 39 secured to gear 26 atthe termination of the driving movement of the latter. The contacts 35and 36 are used to control the energization of the driving motor 22 andtheir function will be more fully explained in connection with thecircuit diagram.

Escapement means.-When the card is in position above the sensing brushesI2 (Fig. 2), further advance is controlled by the escapement `mechanismwhich in turn is responsive to the energization of escape magnet 40.Upon energization of magnet 40, its armature 4I will be rocked about apivot in a clockwise direction and through a screw 42 secured to rod 43will rock the rod 43 counterclockwise against the tension of a spring44. Therod 43 is rocked as an incident to each spacing operation and hassecured to one end thereof oppositely extending arms 45, 46 (see alsoFig. 6), of which arm 46 is provided with a laterally extending pin forengagement with an enlarged opening in a stepping dog 41 which isloosely pivoted on rod 43. Opposite arm 45 is provided with a pinextending into a slot formed in the locking dog 48. When rod 43 isrocked, arm 46 will, through its pin and slot connection with dog 41,lift the latter out of one of the notches of the rack I5 and at the sametime arm 45 will depress locking dog 48 into a notch between the rackteeth. At this time a spring 49 advances the loosely pivoted dog 41 ashort distance just sufficient to permit this dog to move above the topof the next tooth. When the locking dog is again raised, stepping dog41, due to the movement of rack I5, will ride down along the next toothuntil it strikes the end thereof and the carriage is thereby arrested.The usual spring drum (not shown) is provided to bias the rack I5 towardthe right, as viewed in Fig. 6. The detailed structure in this dog andrack arrangement is well known and need not be further described, and itis sufficient to note that for each operation of the escape magnet 4I),the rack I5 is advanced one step or tooth, carrying with it the pusherI3 and forward guide I4, so that the card is likewise advanced one step,each step of advancement being coextensive with the columnar spacing ofthe columns of the card.

Skip control means.-The machine can be provided with the usual skip barindicated at 50 (Figs. 6 and 7) which is removably attached to theescapement rack I5 at one side thereof and provided with suitablenotches and cam surfaces which cooperate with the usual skip lifter arm5I which has a beveled end 52 (Fig. 7) The end of the lifeter 5I liesunder the dog 41 so that, if lifter 5I is moved toward the left, asviewed in Fig. '1, at any time that a high portion of the skip bar is inline therewith, the beveled end of the lifter will cooperate with thecam surface of the bar to raise the end of the lifter which, upon beingso raised, elevates the dog 41 to release rack I5, The lifter arm 5Iwill drop into the next an opening into which the free end of a nger 54extends. 'I'his finger. is integral with armature 56 of skip magnet 66,the armature being pivoted 4at 51. With this arrangement, energizationof magnet 56 will cause lateral shifting of skip lifter 5| withconsequent skipping operations. Upon deenergization of magnet I6, theparts vare returned to normal by a spring 68.

A further means by which the card maybe advanced is controlled byarelease magnet designated 60 (Fig. 2) which, when energized, will rockits armature 6| about pivot 62 causing the free 'end of an integral nger63 to depress a release key 64. The mechanism controlled by this key iswell known in this type of machine and-is briefly as follows. 'I'helower end of key 64 through the bell crank 66 will draw a member 86toward the right, as viewed in Fig. 2. This member 66 is suitablymounted for such movement, and at its left hand endl is provided with acam surface 61 which cooperates with the edge 68 of the supportingplate.` The member 66 also -extends beneath the skip lifter 6| in aposition generally as indicated in Fig. 7, so that as the member 66 ismoved toward the right, cam 61 cooperating with plate/68 will cause anupward tilting of the leftend of the member which in turn will lift thearm 6| upwardly against the stepping dog 41, whereupon the rack will befree togadvance j rack 14 toward the right and through the gearing 13,12 flip the gripper 18 in a counterclockwise uninterruptedly toward theleft. Frictional engagement of the parts will maintain the member 86 inits shifted position so that the escapemento! the rack, when initiatedby the release magnet 60, will not be interrupted until the card hasbeen fully advanced, that is, until the last card column is advanced tothe sensing position.

At this time a suitable projection carried by umn movement through theescape magnet 40.

Multiple column advancement is controlled through the skip magnet 66 incooperation with the skip bar 68, and the complete release of the cardfrom any position to its last columnposif tion is controlled by therelease magnet 66.

Automatic card eecting melma-The machine is provided with mechanism forautomatically removing the sensed cards and depositing the same in areceptacle provided for the purpose. This mechanism is more fully shownand described in Patent No. 1,916,965 issued July 4, 1933, to J. M.Cunningham. Briefly, a gripper 10 occupies the position shown in Fig. 3with its jaw open in card receiving position during the period thattlf-.e card is advanced by the escapement mechanism. The gripper iscarried by the rod 1| to which is secured a gear 12 which through idlers13 is connected to a slidable rack 1 '4 Awhich is normally biased towardthe right by a spring 15. A pivoted latching member 16 engages alatching shoulder at the left hand extremity of the gripper and therebyserves to hold the parts in the position shown in Fig. 3. `When thelatching member 16 is rocked counterclockwise about its direction. Thisnipping action is eiected after the card has been advanced to itsextreme left hand position, at which time the leading edge thereof isbetween the Jaws of the gripper. Releasing the gripper will cause theJaws to automatically clamp the end of the card thereto so that the cardwill be swung in an arc about the rod 1| and deposited in the receptacle18, suitable means being provided to cause the jaws to release the card.

For the purpose of actuating the latch member 18 there is provided theusual eject magnet 18 which, when energized. will rock its armature 80about pivot 8| and draw a link 82 toward the right. 'I'he left extremityof the link is provided with an extension 83 which, when the link ismoved, will strike a depending arm of the latch member 18 and eifect therocking action thereof which results in the ejection of the card bythegripper. 'I'his electing operation will bring about the automaticfeeding of another card from the magazine i0 to the sensing brush. Thisoperation is initiated by means of a pair of automatic start contactsdesignated which are closed through a pivoted bell crank 85, a dependingarm of which is engaged by an extension 88 in rack 14 whenthe rack hasbeen released for movement toward I the right.

In a manner to be explained in connection with the circuit diagram, thecontacts 84 control the operation oi the driving motor which, asexplained, will cause advance o f a new card from the magazine and alsocause movement toward the right of card pusher I3 and forward guide i4.A.las the rack I6 is moved toward the left, its left hand end willengage an adjustable extension 81 carried by the rack 14 which willpositively restore the rack toward the left and through the gearingshown will return the gripper to the position it occupies'in Fig. 3, thelatch member 16 being spring-biased to engage and hold the gripper insuch position until the newly advanced card has been sensed and advancedto its last column position, whereupon the automatic ejection andinitiation of a new card feeding operation will take place.

Record card sensing means-The card sensing brushes I2 are shown in Fig.2. There are provided twelve of these brushes positioned side by side,there being one for each of the usual twelve rows oi.' index pointpositions of the card. The brushes I2 are mounted in an insulating brushholder 90 which is mounted so that the brushes |2 are givensubstantially a vertical movement upwardly, from theposition shown inFig. 2, to contact the card and effect electrical connections throushthe perforations therein with a common contact roller 9|. ment of thebrushes |2 is controlled by the reading brush magnet 92 which,whenkenergized, will cause the brushes I2 to move upwardly throughmechanism generally designated 83. 'Ihis mech- Aanism is o1' the usualconstruction and a detailed description thereof may be foimd in thepatents referred to. Its purpose ls generally to maintain the brushes intheir lower position. when they are not actually sensing perforations inthe card, and thereby preserve them against undue wear and also againstdamage by any inadvertent backward movement of the record cards. Thearmature 84 of magnet `92 is arranged when attracted by the magnet toopen a pair of con- The upward movetacts 95, whose function will beexplained in connection with the circuit diagram.

Miscellaneous` contact means-Several contactsin addition tothosedescribed are provided in the machine, and the operation of these willbe pointed out before the entire operation of the apparatus is explainedin connection with the circuit diagram.

In Fig. 5, a finger piece III) pivoted at I II (also see Fig. 1) isshown mounted on a cross arm 99, which finger piece also has a dependingarm II2. When it is desired to manually back-space the card carriage, itis done by pressing against the finger piece I I0, whereupon a slightrocking thereof is effected before the card carriage actually moves.During this slight rocking, the extension II2 will rock on universal barII3 about its pivot II4 to cause a depending arm IIE thereon to open theso-called cut-out contacts IIB, which are provided in the reading brushmagnet circuit to insure that this magnet is deenergized, and that therelated brushes are in a down position before there is any backwardmovement of the card which might injure the brushes.

In Fig. 6 is shown a pair of contacts |45 known as the last columncontacts. These contacts are closed by an arm |46 secured to theescapement rack and so located that, when the escapement rack isadvanced to the position in which the last column of the card ispresented to the sensing brushes, the extension |46 will be inengagement with and close contacts |45. Also in Fig. 6 are shown thefloating cam contacts |49, one blade of which is shifted by an arm |50which is loosely pivoted on the rod 43 and which has a lateral extensionresting upon the upper edge of the stepping dog 41 so that duringescapement from one column to another, the incidental raising of thestepping dog 41 through arm |50 will cause opening of contacts |49during the period that the dog is raised. In Fig. 4, the rack gear 26 isshown in driving relation with gear |60, the ratio of which gears is1:1. Gear |60 is attached to shaft IBI as shown in Fig. 7A, which shaftis connected to a suitable uni-directional driving mechanism, generallydesignatedA |62, which can be of the usual pawl and ratchet type. Thesaid uni-directional driving mechanism is connected to a cam shaft |63having a plurality of suitable cams I64I68 secured thereto, which camsin turn are arranged to control the operations of suitably disposedcontacts CRCI-CROS, respectively. The purpose of these cam controlledcontacts will be explained hereinbelow,

Perforated telegraphic tape Referring now to Fig. 8, a tape 200 is shownprovided with successive transverse rows of perforations 20| arranged inaccordance with the Well known five-unit telegraphic code, usuallyreferred to as the Baudet or Teletype permutation code. In a five-unitcode system only thirty two possible permutations are available, and, asmentioned hereinabove, for this reason, it is necessary to employ thesame code combinations to represent the alphabetical characters, and thenumerical and other designation characters.

In order to distinguish the alphabetical characters from the otherremaining characters, for telegraphic transmission purposes, thealphabetical signals or code designations are always preceded by aletter shift signal or code designation, and the other remainingcharacter signals or code designations are preceded by a figure shiftsignal or code designation. Whenever, it

is desired, in the telegraphic printed copies. to have spaces appearthereon, it is necessary to insert space code designations in theperforated tape. For example, in the perforated tape shown in Fig. 9,the indicated code perforations are arranged so as to designate123JOI-IN JONES 567; which arrangement of code designations in theperforated tape is necessary when the tape is employed for controllingthe known types of printing telegraph apparatus. The usual smaller feedperforations 202 are also shown to be provided in the tape 200, as wellas the carriage return" and line feed perforations which are provided atthe end of each line of information.

A suitable mechanism for perforating a tape in accordance with the saidBaudet or Teletype code will noW be described.

Tape perforating unit l Referring now to Figs. 10, 11 and 12, theperforating apparatus is shown to include individual punch elements 2I0,one for each unit of the telegraphic code, and a common die block 2II.The punch elements are slidably arranged in a common punch guide block2I2 and are normally yheld in raised positions by means of individualsprings 2I3. The said springs are supported by a bracket 2M which issuitably secured to side plate 2I5. The said punch guide and die blocksare also suitably secured to the side plate 2I5. Each punch element 2 I0 is provided with a recess 2 I 6, into which recess is placed one endof a positionable interposer 2I1 having a yoke portion 2|8. Anindividual interposer 2|'| is provided for each punch element 2li).A Anelongated cam or eccentric 2 I 9 is carried by, or if desired, formed onshaft 220, which shaft is suitably journaled in the side plate 2I5 andend plate 22 I. The eccentric 2I9 is located within the bows of theyokes of the individual and adjacently arranged interposers to supportand actuate or oscillate the said interposers. Normally, during therotation of the eccentric, the interposers are moved downwardly andupwardly (as viewed in Fig. 11) by the supporting eccentric about thepivotal connections formed by the ends of the interposers engaging the-recesses of the related punch elements. Under these conditions, it isseen, that the free ends of the interposers are partially rotated, firstin one direction and then the other direction, or stated in other words,the said free ends of the interposers are oscillated. Suitably disposedstop guides 2I1a and 2I1b are provided to maintain proper alignment ofthe said oscillated interposers.

Individual latch arms 222 are provided, one for each-interposer, and arepivotally mounted in a slotted guide block 223 secured to the said sideand end plates. Near the lower end of each latch arm, la pair of spacedlatching ngers 224 are provided, which fingers are disposed in closeproximity to, but normally held out of the path of the rotatable ends ofthe interposers by means of a slotted leaf spring 225 secured to a resetbail 226. The bail 226 is rotatably mounted in the said side and endplates, and is elongated sufliciently to permit engagement of the bailwith all the latch arms 222. Spring 225 is elongated sufciently so thatthe individual slotted sections engage the related latch arms.

Whenevereit is desired to operate a punch element 2I0, the related latcharm is partially rotated, in a clockwise direction (as Viewed in Fig.11) against the action of the said leaf spring 225, so that its latchfingers 224 engage and latch the

